{
  "cveId": "CVE-2026-101917",
  "url": "https://patchblox.com/security/cve/CVE-2026-101917",
  "summary": "CVE-2026-101917 is fixed in 4 products on 1 platform, first by python3-jwt 2.10.1-4ubuntu1.3, released September 28, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "PyJWT: PyJWKClient still amplifies unauthenticated JWKS fetches on unknown kid values (incomplete fix of CVE-2026-48524)",
  "description": "PyJWT is a Python implementation of JSON Web Token standards. Prior to 2.14.0, PyJWT get_signing_key_from_jwt is affected because unknown kid misses force refreshes without a negative cache or minimum refresh interval. This occurs when unauthenticated tokens repeatedly use the same unknown kid or varying kid values absent from the cached JWKS. As a result, each cache miss causes PyJWKClient to refresh the JWKS. Consequently, attacker traffic can amplify outbound requests to the configured JWKS endpoint. This issue is fixed in version 2.14.0.",
  "published": "2026-09-28T14:17:00Z",
  "severity": "Moderate",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "cwe": "Allocation of Resources Without Limits or Throttling",
  "epss": 0.00428,
  "epssPercentile": 0.37264,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-101917",
  "fixes": [
    {
      "platform": "linux",
      "product": "pyjwt",
      "release": "Debian 14",
      "fixedVersion": "2.14.0-1",
      "fix": "DEBIAN-CVE-2026-101917",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-101917",
      "released": "2026-10-04T21:29:23Z"
    },
    {
      "platform": "linux",
      "product": "python-PyJWT",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "2.12.1-160000.3.1",
      "fix": "OPENSUSE-SU-2026:22074-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-22074-1",
      "released": "2026-11-07T00:47:19Z"
    },
    {
      "platform": "linux",
      "product": "python-PyJWT",
      "release": "sles 15.6",
      "fixedVersion": "2.8.0-150400.8.20.1",
      "fix": "SUSE-SU-2026:5064-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-5064-1",
      "released": "2026-11-07T00:42:08Z"
    },
    {
      "platform": "linux",
      "product": "python-PyJWT",
      "release": "sles 15.7",
      "fixedVersion": "2.8.0-150400.8.20.1",
      "fix": "SUSE-SU-2026:5064-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-5064-1",
      "released": "2026-11-07T00:42:08Z"
    },
    {
      "platform": "linux",
      "product": "python-PyJWT",
      "release": "sles 16.0",
      "fixedVersion": "2.12.1-160000.3.1",
      "fix": "SUSE-SU-2026:24219-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-24219-1",
      "released": "2026-11-07T00:44:01Z"
    },
    {
      "platform": "linux",
      "product": "python3-jwt",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "2.3.0-1ubuntu0.6",
      "fix": "python3-jwt 2.3.0-1ubuntu0.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-python3-jwt-2.3.0-1ubuntu0.6",
      "released": "2026-10-27T21:15:05Z"
    },
    {
      "platform": "linux",
      "product": "python3-jwt",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "2.7.0-1ubuntu0.4",
      "fix": "python3-jwt 2.7.0-1ubuntu0.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-python3-jwt-2.7.0-1ubuntu0.4",
      "released": "2026-10-27T21:15:08Z"
    },
    {
      "platform": "linux",
      "product": "python3-jwt",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "2.10.1-4ubuntu1.3",
      "fix": "python3-jwt 2.10.1-4ubuntu1.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-python3-jwt-2.10.1-4ubuntu1.3",
      "released": "2026-09-28T14:17:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-jwt",
      "release": "amzn 2023",
      "fixedVersion": "2.4.0-1.amzn2023.0.6",
      "fix": "ALAS2023-2026-3298",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3298",
      "released": "2026-11-07T01:06:07Z"
    },
    {
      "platform": "linux",
      "product": "python3-jwt\u002Bcrypto",
      "release": "amzn 2023",
      "fixedVersion": "2.4.0-1.amzn2023.0.6",
      "fix": "ALAS2023-2026-3298",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3298",
      "released": "2026-11-07T01:06:07Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}